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-rw-r--r--src/Makefile.am2
-rw-r--r--src/pcm_format.c148
-rw-r--r--src/pcm_format.h36
-rw-r--r--src/pcm_utils.c127
4 files changed, 187 insertions, 126 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index c5259b155..00891cfc0 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -53,6 +53,7 @@ mpd_headers = \
pcm_volume.h \
pcm_mix.h \
pcm_channels.h \
+ pcm_format.h \
pcm_resample.h \
pcm_dither.h \
pcm_prng.h \
@@ -134,6 +135,7 @@ mpd_SOURCES = \
pcm_volume.c \
pcm_mix.c \
pcm_channels.c \
+ pcm_format.c \
pcm_resample.c \
pcm_dither.c \
permission.c \
diff --git a/src/pcm_format.c b/src/pcm_format.c
new file mode 100644
index 000000000..9e6f42265
--- /dev/null
+++ b/src/pcm_format.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "pcm_format.h"
+#include "pcm_utils.h"
+
+#include <glib.h>
+
+static void
+pcm_convert_8_to_16(int16_t *out, const int8_t *in,
+ unsigned num_samples)
+{
+ while (num_samples > 0) {
+ *out++ = *in++ << 8;
+ --num_samples;
+ }
+}
+
+static void
+pcm_convert_24_to_16(struct pcm_dither_24 *dither,
+ int16_t *out, const int32_t *in,
+ unsigned num_samples)
+{
+ pcm_dither_24_to_16(dither, out, in, num_samples);
+}
+
+const int16_t *
+pcm_convert_to_16(struct pcm_convert_state *convert,
+ uint8_t bits, const void *src,
+ size_t src_size, size_t *dest_size_r)
+{
+ static int16_t *buf;
+ static size_t len;
+ unsigned num_samples;
+
+ switch (bits) {
+ case 8:
+ num_samples = src_size;
+ *dest_size_r = src_size << 1;
+ if (*dest_size_r > len) {
+ len = *dest_size_r;
+ buf = g_realloc(buf, len);
+ }
+
+ pcm_convert_8_to_16((int16_t *)buf,
+ (const int8_t *)src,
+ num_samples);
+ return buf;
+
+ case 16:
+ *dest_size_r = src_size;
+ return src;
+
+ case 24:
+ num_samples = src_size / 4;
+ *dest_size_r = num_samples * 2;
+ if (*dest_size_r > len) {
+ len = *dest_size_r;
+ buf = g_realloc(buf, len);
+ }
+
+ pcm_convert_24_to_16(&convert->dither,
+ (int16_t *)buf,
+ (const int32_t *)src,
+ num_samples);
+ return buf;
+ }
+
+ g_warning("only 8 or 16 bits are supported for conversion!\n");
+ return NULL;
+}
+
+static void
+pcm_convert_8_to_24(int32_t *out, const int8_t *in,
+ unsigned num_samples)
+{
+ while (num_samples > 0) {
+ *out++ = *in++ << 16;
+ --num_samples;
+ }
+}
+
+static void
+pcm_convert_16_to_24(int32_t *out, const int16_t *in,
+ unsigned num_samples)
+{
+ while (num_samples > 0) {
+ *out++ = *in++ << 8;
+ --num_samples;
+ }
+}
+
+const int32_t *
+pcm_convert_to_24(uint8_t bits, const void *src,
+ size_t src_size, size_t *dest_size_r)
+{
+ static int32_t *buf;
+ static size_t len;
+ unsigned num_samples;
+
+ switch (bits) {
+ case 8:
+ num_samples = src_size;
+ *dest_size_r = src_size * 4;
+ if (*dest_size_r > len) {
+ len = *dest_size_r;
+ buf = g_realloc(buf, len);
+ }
+
+ pcm_convert_8_to_24(buf, (const int8_t *)src,
+ num_samples);
+ return buf;
+
+ case 16:
+ num_samples = src_size / 2;
+ *dest_size_r = num_samples * 4;
+ if (*dest_size_r > len) {
+ len = *dest_size_r;
+ buf = g_realloc(buf, len);
+ }
+
+ pcm_convert_16_to_24(buf, (const int16_t *)src,
+ num_samples);
+ return buf;
+
+ case 24:
+ *dest_size_r = src_size;
+ return src;
+ }
+
+ g_warning("only 8 or 24 bits are supported for conversion!\n");
+ return NULL;
+}
diff --git a/src/pcm_format.h b/src/pcm_format.h
new file mode 100644
index 000000000..2c52adea3
--- /dev/null
+++ b/src/pcm_format.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef PCM_FORMAT_H
+#define PCM_FORMAT_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+struct pcm_convert_state;
+
+const int16_t *
+pcm_convert_to_16(struct pcm_convert_state *convert,
+ uint8_t bits, const void *src,
+ size_t src_size, size_t *dest_size_r);
+
+const int32_t *
+pcm_convert_to_24(uint8_t bits, const void *src,
+ size_t src_size, size_t *dest_size_r);
+
+#endif
diff --git a/src/pcm_utils.c b/src/pcm_utils.c
index fd2786e3a..3e66edef2 100644
--- a/src/pcm_utils.c
+++ b/src/pcm_utils.c
@@ -18,6 +18,7 @@
#include "pcm_utils.h"
#include "pcm_channels.h"
+#include "pcm_format.h"
#include "conf.h"
#include "audio_format.h"
@@ -37,132 +38,6 @@ void pcm_convert_init(struct pcm_convert_state *state)
pcm_dither_24_init(&state->dither);
}
-static void
-pcm_convert_8_to_16(int16_t *out, const int8_t *in,
- unsigned num_samples)
-{
- while (num_samples > 0) {
- *out++ = *in++ << 8;
- --num_samples;
- }
-}
-
-static void
-pcm_convert_24_to_16(struct pcm_dither_24 *dither,
- int16_t *out, const int32_t *in,
- unsigned num_samples)
-{
- pcm_dither_24_to_16(dither, out, in, num_samples);
-}
-
-static const int16_t *
-pcm_convert_to_16(struct pcm_convert_state *convert,
- uint8_t bits, const void *src,
- size_t src_size, size_t *dest_size_r)
-{
- static int16_t *buf;
- static size_t len;
- unsigned num_samples;
-
- switch (bits) {
- case 8:
- num_samples = src_size;
- *dest_size_r = src_size << 1;
- if (*dest_size_r > len) {
- len = *dest_size_r;
- buf = g_realloc(buf, len);
- }
-
- pcm_convert_8_to_16((int16_t *)buf,
- (const int8_t *)src,
- num_samples);
- return buf;
-
- case 16:
- *dest_size_r = src_size;
- return src;
-
- case 24:
- num_samples = src_size / 4;
- *dest_size_r = num_samples * 2;
- if (*dest_size_r > len) {
- len = *dest_size_r;
- buf = g_realloc(buf, len);
- }
-
- pcm_convert_24_to_16(&convert->dither,
- (int16_t *)buf,
- (const int32_t *)src,
- num_samples);
- return buf;
- }
-
- g_warning("only 8 or 16 bits are supported for conversion!\n");
- return NULL;
-}
-
-static void
-pcm_convert_8_to_24(int32_t *out, const int8_t *in,
- unsigned num_samples)
-{
- while (num_samples > 0) {
- *out++ = *in++ << 16;
- --num_samples;
- }
-}
-
-static void
-pcm_convert_16_to_24(int32_t *out, const int16_t *in,
- unsigned num_samples)
-{
- while (num_samples > 0) {
- *out++ = *in++ << 8;
- --num_samples;
- }
-}
-
-static const int32_t *
-pcm_convert_to_24(uint8_t bits, const void *src,
- size_t src_size, size_t *dest_size_r)
-{
- static int32_t *buf;
- static size_t len;
- unsigned num_samples;
-
- switch (bits) {
- case 8:
- num_samples = src_size;
- *dest_size_r = src_size * 4;
- if (*dest_size_r > len) {
- len = *dest_size_r;
- buf = g_realloc(buf, len);
- }
-
- pcm_convert_8_to_24(buf, (const int8_t *)src,
- num_samples);
- return buf;
-
- case 16:
- num_samples = src_size / 2;
- *dest_size_r = num_samples * 4;
- if (*dest_size_r > len) {
- len = *dest_size_r;
- buf = g_realloc(buf, len);
- }
-
- pcm_convert_16_to_24(buf, (const int16_t *)src,
- num_samples);
- return buf;
-
- case 24:
- *dest_size_r = src_size;
- return src;
- }
-
- g_warning("only 8 or 24 bits are supported for conversion!\n");
- return NULL;
-}
-
static size_t
pcm_convert_16(const struct audio_format *src_format,
const void *src_buffer, size_t src_size,
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 02:11:59 +0000